[Xen-changelog] [xen-unstable] libxenlight: enables less than maximum vcpus

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1259675373 0
# Node ID c01e324ef514b0c83649b0cc0393ffe3d506bfda
# Parent  72ad0f6bb3b61497d75d0ef71f8e422f4ce1826c
libxenlight: enables less than maximum vcpus

Enable turning on a different amount of vcpus than
the maximum during domain creation/restore.

Signed-off-by: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>
---
 tools/libxl/libxl.h     |    1 +
 tools/libxl/libxl_dom.c |    3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff -r 72ad0f6bb3b6 -r c01e324ef514 tools/libxl/libxl.h
--- a/tools/libxl/libxl.h       Tue Dec 01 13:48:48 2009 +0000
+++ b/tools/libxl/libxl.h       Tue Dec 01 13:49:33 2009 +0000
@@ -64,6 +64,7 @@ typedef struct {
     int hpet;
     int vpt_align;
     int max_vcpus;
+    int cur_vcpus;
     uint32_t max_memkb;
     uint32_t video_memkb;
     uint32_t shadow_memkb;
diff -r 72ad0f6bb3b6 -r c01e324ef514 tools/libxl/libxl_dom.c
--- a/tools/libxl/libxl_dom.c   Tue Dec 01 13:48:48 2009 +0000
+++ b/tools/libxl/libxl_dom.c   Tue Dec 01 13:49:33 2009 +0000
@@ -88,7 +88,8 @@ int build_post(struct libxl_ctx *ctx, ui
     ents[9] = libxl_sprintf(ctx, "%lu", state->store_mfn);
     for (i = 0; i < info->max_vcpus; i++) {
         ents[10+(i*2)]   = libxl_sprintf(ctx, "cpu/%d/availability", i);
-        ents[10+(i*2)+1] = "online";
+        ents[10+(i*2)+1] = (i && info->cur_vcpus && (i >= info->cur_vcpus))
+                            ? "offline" : "online";
     }
 
     dom_path = libxl_xs_get_dompath(ctx, domid);

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